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Major complications. Forest plot comparing risk ratios of minor complications (as defined in Appendix 2) after total hip arthroplasty versus hemiarthroplasty in displaced femoral neck fractures in the healthy elderly. Mantel-Haenszel statistical method was used with the ‘random effects’ analysis method for dichotomous data. M-H Mantel-Haenszel, THA total hip arthroplasty, HA hemiarthroplasty
